Added a net::BidirectionalStream to expose a bidirectional streaming interface

net/http/http_stream_factory_impl_request.h

Index: net/http/http_stream_factory_impl_request.h
diff --git a/net/http/http_stream_factory_impl_request.h b/net/http/http_stream_factory_impl_request.h
index dfa9d2ebe194f153759ce6fec6e94ae7545f7954..9f53bd0e4fdabf98b48b83f401580683b27577e5 100644
--- a/net/http/http_stream_factory_impl_request.h
+++ b/net/http/http_stream_factory_impl_request.h
@@ -19,18 +19,27 @@
 
 namespace net {
 
+class BidirectionalStreamJob;
 class ClientSocketHandle;
 class HttpStream;
 class SpdySession;
 
 class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
  public:
+  // Indicates which type of stream is requested.
+  enum StreamType {
+    BIDIRECTIONAL_STREAM_SPDY_JOB,
+    HTTP_STREAM,
+  };
+
   Request(const GURL& url,
           HttpStreamFactoryImpl* factory,
           HttpStreamRequest::Delegate* delegate,
           WebSocketHandshakeStreamBase::CreateHelper*
               websocket_handshake_stream_create_helper,
-          const BoundNetLog& net_log);
+          const BoundNetLog& net_log,
+          StreamType stream_type);
+
   ~Request() override;
 
   // The GURL from the HttpRequestInfo the started the Request.
@@ -59,10 +68,14 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
   void RemoveRequestFromSpdySessionRequestMap();
 
   // Called by an attached Job if it sets up a SpdySession.
-  void OnNewSpdySessionReady(Job* job,
-                             scoped_ptr<HttpStream> stream,
-                             const base::WeakPtr<SpdySession>& spdy_session,
-                             bool direct);
+  // |stream| is null when |for_bidirectional| is true.
+  // |bidirectional_stream_spdy_job| is null when |for_bidirectional| is false.
+  void OnNewSpdySessionReady(
+      Job* job,
+      scoped_ptr<HttpStream> stream,
+      scoped_ptr<BidirectionalStreamJob> bidirectional_stream_spdy_job,
+      const base::WeakPtr<SpdySession>& spdy_session,
+      bool direct);
 
   // Called by an attached Job to record connection attempts made by the socket
   // layer for this stream request.
@@ -80,6 +93,11 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
                      const SSLConfig& used_ssl_config,
                      const ProxyInfo& used_proxy_info,
                      HttpStream* stream);
+  void OnBidirectionalStreamJobReady(Job* job,
+                                     const SSLConfig& used_ssl_config,
+                                     const ProxyInfo& used_proxy_info,
+                                     BidirectionalStreamJob* stream);
+
   void OnWebSocketHandshakeStreamReady(Job* job,
                                        const SSLConfig& used_ssl_config,
                                        const ProxyInfo& used_proxy_info,
@@ -116,6 +134,7 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
   NextProto protocol_negotiated() const override;
   bool using_spdy() const override;
   const ConnectionAttempts& connection_attempts() const override;
+  bool for_bidirectional() const { return for_bidirectional_; }
 
  private:
   // Used to bind |job| to the request and orphan all other jobs in |jobs_|.
@@ -149,6 +168,7 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
   bool using_spdy_;
   ConnectionAttempts connection_attempts_;
 
+  const bool for_bidirectional_;
   DISALLOW_COPY_AND_ASSIGN(Request);
 };